The Pineal Gland
The pineal gland was called the "third eye" by ancient people. It was thought to have mystical powers. This may be why the French philosopher Descartes decided that the pineal gland was the seat of the human soul, the location of what we call the mind. The pineal does contain a complete map of the visual field of the eyes, and it plays several significant roles in human functioning.
The second reason for interest in the pineal gland is that it contains magnetic material in birds and other animals. It is a center for navigation. This, of course, is important for blind individuals. If the pineal gland turns out to contain magnetic material in humans (researchers are looking), then it may be involved in navigational processing. Magnetic processing is subtle and may be part of the bodies unconscious navigational system. Mobility specialists are aware of this possibility, but we have yet to use it to train students.
Studies done mostly with birds strongly suggest that the pineal gland is a center for navigation. Scientists believe that the pineal body is a magnetoreceptor, capable of monitoring magnetic fields, and helping to align the body in space. Changing the direction of magnetic fields around the heads of birds alters their ability to orient.
Electromagnetic fields (EMF) suppress the activity of the pineal gland and reduce melatonin production. EMF activity therefore disrupts the bodies circadian rhythms.